Installation Guide
Tools Needed:
- Vacuum pump with gauge manifold
- Refrigerant charging hose
- Flaring tool set
- Torque wrench
- Pipe cutter
- Level
- Drill with hole saw attachment
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearances, away from heat sources, and with adequate structural support for both indoor and outdoor units.
- Mount Indoor Unit: Install mounting plate securely on wall, ensuring it is level. Hang indoor unit on plate.
- Install Outdoor Unit: Place outdoor unit on stable, level surface with proper vibration isolation pads.
- Connect Refrigerant Pipes: Connect copper pipes between indoor and outdoor units using flare connections. Ensure proper insulation on pipes.
- Connect Drain Hose: Install drain hose with proper downward slope to ensure proper condensation drainage.
- Electrical Connection: Connect power supply to outdoor unit and communication wires between indoor and outdoor units following local electrical codes.
- Vacuum and Charge: Evacuate system using vacuum pump, then charge with specified amount of R-410A refrigerant.
- Test System: Power on system and test all functions including cooling, heating, fan speeds, and remote control operation.
Specifications
| Model Series | MSZ-FH/FS Series |
| Type | Wall-mounted Ductless Split System |
| Color | White / Titanium |
| Cooling Capacity | 9,000 - 24,000 BTU/h |
| Heating Capacity | 10,000 - 27,000 BTU/h |
| Noise Level (Indoor) | 19 - 42 dB |
| Control Type | Wireless Remote with LCD Display |
| Energy Rating | SEER 26+ / HSPF 11+ |
| Refrigerant Type | R-410A |
| Power Requirements | 208-230V, 60Hz, 1Ph |
| Dimensions Indoor (HxWxD) | 29.5 x 37.4 x 8.7 in |
| Dimensions Outdoor (HxWxD) | 21.3 x 31.5 x 12.6 in |
| Operating Temperature Range | -13°F to 122°F |
Warranty Information
- Full Warranty: 5 years parts and labor
- Compressor Warranty: 7 years on inverter compressor
- Extended Coverage: Optional 12-year warranty available upon registration
For warranty service, contact Mitsubishi Electric at 1-800-433-4822 or visit MitsubishiComfort.com
Key Features
Inverter Technology
Advanced DC inverter compressor adjusts speed to maintain precise temperature control, reducing energy consumption by up to 40% compared to conventional systems.
Hyper-Heating INVERTER®
Provides reliable heating performance even in extreme cold temperatures down to -13°F, maintaining efficiency and comfort throughout winter.
3D i-See Sensor™
Infrared sensor detects human presence and movement, automatically directing airflow toward occupied areas while avoiding direct blast on occupants.
Plasma Quad Filter
Four-stage filtration system removes dust, pollen, odors, and bacteria from the air, improving indoor air quality and creating a healthier environment.
kumo cloud® Integration
Wi-Fi enabled for remote control via smartphone app, allowing scheduling, monitoring, and control from anywhere with internet access.
Quiet Operation
Sound levels as low as 19 dB in quiet mode, quieter than a whisper, ensuring undisturbed sleep and peaceful environment.
Operation Modes Explained
Auto Mode
System automatically selects cooling or heating based on room temperature
Cool Mode
Standard cooling operation with adjustable temperature and fan speed
Heat Mode
Heating operation with defrost cycle for efficient winter operation
Dry Mode
Dehumidification without significant cooling, ideal for humid days
Fan Mode
Circulates air without heating or cooling, with multiple speed options
Eco Mode
Energy-saving operation that optimizes performance for efficiency
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not turning on | Power outage, circuit breaker tripped, remote battery dead | Check power supply, reset breaker, replace remote batteries |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check for leaks, clear obstructions around units |
| Water leaking indoors | Clogged drain line, improper installation slope | Clear drain line, ensure proper downward slope |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten mounting, clear debris, check isolation pads |
| Ice formation on unit | Dirty filters, low refrigerant, faulty defrost cycle | Clean filters, check refrigerant charge, verify defrost operation |
| Remote not working | Dead batteries, signal obstruction, sensor issue | Replace batteries, clear line of sight, check sensor |
Error Codes
- P1/P2: Power supply issue - Check voltage and connections
- E6: Communication error - Check wiring between indoor/outdoor units
- H9: Outdoor temperature sensor error - Replace sensor
- F3: Discharge pipe temperature error - Check refrigerant charge
- U4: Indoor/outdoor communication error - Check wiring and connections
- EA: Outdoor fan motor error - Check fan motor and blades
Manual Downloads
Current Model Manuals
MSZ-FH12NA
12,000 BTU Hyper-Heat
MSZ-FH18NA
18,000 BTU Hyper-Heat
MSZ-FS06NA
6,000 BTU Standard
MSZ-FH24NA
24,000 BTU Hyper-Heat
Popular Previous Models
MSZ-GE09NA
9,000 BTU Standard
MSZ-FE12NA
12,000 BTU Advanced
MSZ-GL12NA
12,000 BTU Wall Mount
MSZ-FH09NA
9,000 BTU Hyper-Heat